Thought Insertion vs Thought Broadcasting vs Thought Withdrawal
Thought Insertion Thought Broadcasting Thought Withdrawal
Overview
All three are passivity phenomena in which the normal boundary between the person's own mind and the outside world has broken down, and all three are classically first-rank symptoms of schizophrenia. What separates them is the direction the thought is believed to travel: into the mind from outside, out of the mind to others, or away from the mind entirely.
| Dimension | thought-insertion | thought-broadcasting | thought-withdrawal |
|---|---|---|---|
| Direction of the disturbance | Inward — thoughts arrive in the mind from an outside source | Outward — thoughts leave the privacy of the mind and become accessible to others | Away — thoughts are removed from the mind entirely |
| What the person believes has happened | An outside force has placed thoughts into their mind that are not their own | Their own thoughts are no longer private — others can access, hear, or share them | An outside force has taken thoughts out of their mind while they were thinking |
| Where the thought ends up | In the person's own mind, though recognised as foreign to them | In other people's awareness, while still originating from the person's own mind | Nowhere the person can access — the thought is simply gone, taken by an external agency |
| Felt agency | An outside force is actively putting thoughts in | No active agent is necessarily required — the thoughts are simply no longer confined to the person's own mind | An outside force is actively taking thoughts out |
| Typical example | A person is certain that thoughts about a stranger are being placed into their mind by a nearby device, and insists these thoughts are not their own | A person believes that as they think, everyone around them on the bus can hear or share the same thoughts | A person is mid-sentence when their thought suddenly vanishes, and they are certain it has been taken from them rather than simply forgotten |
Common confusion
Students often remember that all three are 'passivity phenomena involving thought' without being able to recall, under pressure, which is which. The reliable shortcut is to track the direction of travel: insertion goes in, broadcasting goes out to other minds, withdrawal goes away entirely. All three still require the core passivity feature of an external agency being blamed — ordinary distractibility, forgetting a thought, or simply worrying that others can guess what you're thinking does not qualify as any of the three.
Clarifying questions
- Do you feel thoughts are being put into your mind from somewhere else, or that your own thoughts are somehow escaping to other people, or that they're being taken away from you?
- When this happens, do you feel the thought itself still belongs to you, or does it feel like it was never yours to begin with?
- Does the thought simply trail off the way thoughts sometimes do when you're distracted, or does it feel like it was actively taken from you by something outside yourself?
Provenance
Class B · tier T1 · lifecycle migrated_candidate
- Casey, P. & Kelly, B. (2019). Fish's Clinical Psychopathology, 4th ed. Ch. 4, 'Disorders of Thought and Speech'.